Window-lock.



C. DEAN.

WINDOW LOCK.

APPLICATION FILED SEPT. 25, 1917.

1 ,25 1, 1 88. Patented Dec. 25 1917;

1 9 IIIIIIIQ 3 wvwwlioz UNITED STATES PATENT @FFIQE.

CHARLES DEAN, OF NEW YORK, N. Y.

WIND OW-LOGK.

Application filed September 25, 1917.

To all whom it mag concern:

Be it known that I, CHARLES DEAN, a citizen of the United States, and resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in WVindow- Locks, of which the following is a specification.

This invention relates generally to window locks and more particularly to adjustable window lockswhereby the window may be locked in an open position, the invention as herein embodied being more especially designed and adapted for use on double hung windows.

The invention has for an object to produce a lock of this type in which easy operation and simple and cheap construction are combined in a lock of suflicient strength to stay the upper and lower sashes of a clouble hung window in any desired position in such a manner that neither sash may be moved from without.

For further comprehension of the inven-' tion and its objects and advantages reference will be had to the following description and accompanying drawings in which I have described and illustrated the preferred embodiment of the invention.

Figure 1 of the drawings is a side elevation of the lock showing it in position securing the upper and lower sashes of the window in an open position, the sashes being shown invertieal section.

Fig. 2 is a horizontal section on the line 22 of Fig. 1

Fig. 3 is an end view of the lock detached.

4 is a detail sectional View showing the manner of mounting the cap on the adjusting screw.

In the drawings 1 represents the outer sash, 2 the inner sash and 3 the window frame of a typical double hung window.

On the top rail of the inner, or lower,

sash 2 and so located as to be on the center of the stiles of the outer and inner sashes is placed a shaped plate 4 and which may be secured to the inner sash 2 by means of the screws 14:.

The plate i is formed on one end with a Specification of Letters Patent.

Patented Dec. 25, 1917.

Serial No. 193,105.

down-turned tongue 5 which its between the outer and inncr sashes. On the opposite end of plate 4 is formed an upturned tongue 6 while between these tongues the plate is formed with a U-shaped offset 7 The tongue 6 and both legs of the .U- shaped offset 7 are perforated to receive freely a locking member in the form of a threaded rod 8 provided on'the end adapted to engage the outer sash with a cap 9 which is loosely riveted thereto as shownat 10 in Fig. 4, or otherwise connected thereto in a manner to permit of slight angular adjustment or movement of the cap on the rod while the rod is being rotated relatively to the cap.

The rod 8 is screwed through a nut 11 located loosely between the legsof the offset 7 and held from revolving by engagement with the web of the latter.

By reason of the loose mounting of the cap 9 0n the rod 8 it is possible for the face of the cap to obtain a flat or close engagement with the outer sash 1 when the rod 8 is turned to set the lock. This turning of the rod forces the cap against the outer sash while the tongue 5 is forced against the inner sash, thereby wedging the sashes against the outer and inner surfaces respectively of the window frame in such a manner as to secure the sashes from being raised or lowered.

It will be apparent that with the construction above described I provide a lock of light and cheap construction which at the same time has the requisite strength to securely hold the sashes in any adjusted position.

What I claim is:

A window lock comprising a shaped plate adapted to be mounted on the inner sash of a double hung window, said plate having at one end a tongue adapted to project between the inner and outer sashes of the window and at its opposite end a perforated upwardly projecting tongue, said plate being also formed between its ends with a U-shaped offset presenting registering perforations in the legs thereof. a threaded locking member passing freely through the perforations in the said tongue New York and State of New York this 20th and ofl'sethand addapted to engage the outer day of September, A. D. 1917. sash of t e Win OW and a nut disposed loosely butnon-rotathbly between the legs DEAN '5 of the said oflset and through which said Witnesses: --\r,

, locking member is screwed. E. C. DEAN,

Signed at New York, in the county of MN. LINDBERG. 

